Preparation method for nano calcium carbonate special for low modulus silicone adhesive
A nano-calcium carbonate and silicone adhesive technology, which is applied in chemical instruments and methods, adhesives, dyed organic silicon compound processing, etc., can solve the problems of reducing the modulus of silicone adhesives and failing to meet the requirements for the use of low-modulus silicone adhesives. , to achieve the effect of improving the carbonization effect, meeting the requirements of use and improving the dispersibility
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0015] The preparation method of nano-calcium carbonate special for low modulus silicone glue is implemented according to the following steps:
[0016] ① Preparation of Ca(OH) 2 Slurry: Calcium oxide is obtained by calcining limestone, and the calcium oxide is digested with hot water at 50-60°C to obtain Ca(OH) with a mass percentage concentration of 13%. 2 , Ca(OH) 2 Aging at 50-60°C for 18 hours, then sieving to obtain refined Ca(OH) 2 slurry;
[0017] ② Carbonization: Ca(OH) 2 The mass percentage of the slurry is controlled at 8.5%, the temperature is controlled at 18-22°C, and it is input into the carbonization tower, and then sodium polyacrylate with a molecular weight of 4000-5000, sodium polyacrylate and Ca(OH) 2 The weight ratio of the slurry is 0.2︰100, then add citric acid, citric acid and Ca(OH) 2 The weight ratio of the slurry is 0.2:100, and then CO is introduced 2 The kiln gas with a volume content of 28% is carbonized;
[0018] ③ Add crystal form modifier...
Embodiment 2
[0023] The preparation method of nano-calcium carbonate special for low modulus silicone glue is implemented according to the following steps:
[0024] ① Preparation of Ca(OH) 2 Slurry: Calcium oxide is obtained by calcining limestone, and the calcium oxide is digested with hot water at 50-60°C to obtain Ca(OH) with a mass percentage concentration of 15%. 2 , Ca(OH) 2 Aging at 50-60°C for 32 hours, then sieving to obtain refined Ca(OH) 2 slurry;
[0025] ② Carbonization: the refined Ca(OH) 2 The mass percentage of the slurry is controlled at 10%, the temperature is controlled at 18-22°C, and it is input into the carbonization tower, and then sodium polyacrylate with a molecular weight of 4000-5000, sodium polyacrylate and Ca(OH) 2 The weight ratio of the slurry is 0.5:100, then add sulfuric acid, sulfuric acid and Ca(OH) 2 The weight ratio of the slurry is 0.5:100, and then CO is introduced 2 The kiln gas with a volume content of 35% is carbonized;
[0026] ③Add crystal...
Embodiment 3
[0031] The preparation method of nano-calcium carbonate special for low modulus silicone glue is implemented according to the following steps:
[0032] ① Preparation of Ca(OH) 2 Slurry: Calcium oxide is obtained by calcining limestone, and the calcium oxide is digested with hot water at 50-60°C to obtain Ca(OH) with a mass percentage concentration of 14%. 2 , Ca(OH) 2 Aging at 50-60°C for 25 hours, then sieving to obtain refined Ca(OH) 2 slurry;
[0033] ② Carbonization: the refined Ca(OH) 2 The mass percentage of the slurry is controlled at 9.5%, the temperature is controlled at 20°C, and it is input into the carbonization tower, and then sodium polyacrylate with a molecular weight of 4000-5000, sodium polyacrylate and Ca(OH) 2 The weight ratio of the slurry is 0.3:100, then add aluminum sulfate, aluminum sulfate and Ca(OH) 2The weight ratio of the slurry is 0.3:100, and then CO is introduced 2 The kiln gas with a volume content of 31% is carbonized;
[0034] ③ Add cry...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com